以RT-flex柴油机的燃油共轨系统为仿真对象，研究RT-flex柴油机燃油共轨系统的工作原理和结构特点。对燃油共轨系统的高压油泵、中间储油器、燃油共轨管、ICU燃油流量控制活塞、喷油器建立数学模型。采用SIMULINK进行仿真分析，结果表明所建数学模型基本正确。在VS2012平台下开发RT-flex柴油机燃油共轨系统的可视化仿真系统，系统能够形象显示燃油共轨系统的工作原理及运行状态，在轮机模拟器开发及人员培训方面具有应用价值。

With the fuel common rail system of RT-flex diesel engine as the simulation object，studying the working principle and structural features of the fuel common rail system. The mathematical models of high pressure fuel oil pump, intermediate fuel accumulator, fuel rail ICU piston and injector is established. Analyzing the mathematical models by SIMULINK, and the mathematical models are proper. The visual simulation system of the common fuel rail system in RT-flex diesel is developed by VS2012. The visual simulation system can display the working principle and running of the common fuel rail system, and this is useful in developing marine engine simulator and training candidates.